WO2022059938A1 - Dispositif de mesure de température et dispositif de stockage d'énergie comportant ce dernier - Google Patents

Dispositif de mesure de température et dispositif de stockage d'énergie comportant ce dernier Download PDF

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Publication number
WO2022059938A1
WO2022059938A1 PCT/KR2021/011048 KR2021011048W WO2022059938A1 WO 2022059938 A1 WO2022059938 A1 WO 2022059938A1 KR 2021011048 W KR2021011048 W KR 2021011048W WO 2022059938 A1 WO2022059938 A1 WO 2022059938A1
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WO
WIPO (PCT)
Prior art keywords
optical fiber
outer section
power device
temperature
cable
Prior art date
Application number
PCT/KR2021/011048
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English (en)
Korean (ko)
Inventor
최형석
한수환
Original Assignee
엘에스일렉트릭(주)
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Filing date
Publication date
Application filed by 엘에스일렉트릭(주) filed Critical 엘에스일렉트릭(주)
Priority to US18/026,719 priority Critical patent/US20240035904A1/en
Priority to CN202180063257.XA priority patent/CN116235349A/zh
Publication of WO2022059938A1 publication Critical patent/WO2022059938A1/fr

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
    • G01K11/324—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres using Raman scattering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
    • G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
    • G01K11/3206—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres at discrete locations in the fibre, e.g. using Bragg scattering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/488—Cells or batteries combined with indicating means for external visualization of the condition, e.g. by change of colour or of light density
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present invention relates to a temperature measuring device for measuring the temperature of a power device module and an energy storage device including the same.
  • an energy storage system refers to a device that stores energy using a physical medium.
  • Energy storage can be largely divided into a physical energy storage method and a chemical energy storage method according to the storage method.
  • Representative physical energy storage includes pumping-up power generation, compressed air storage, and flywheels.
  • Chemical energy storage mainly uses batteries, such as lithium-ion batteries, lead-acid batteries, sodium sulfur, etc. (NaS) batteries and the like.
  • the battery type ESS is referred to as a BESS (Battery Energy Storage System), and in general, the ESS refers to the BESS.
  • the energy storage device is usually provided with a temperature sensor therein.
  • the energy storage device is usually composed of a cell (cell), a module (module), and a rack (rack) unit.
  • the energy storage device using a battery is formed in the form of a rack (1).
  • the rack 1 is configured in a form in which the battery module 2 is stacked in multiple stages on a structure such as a beam.
  • each battery module 2 is composed of a combination of a plurality of battery cells (not shown).
  • a temperature sensor (not shown) for self-temperature measurement is provided inside each battery module 2 .
  • the temperature sensor fails, the temperature measurement of the battery module 2 becomes impossible.
  • the temperature sensor is provided inside the battery module 2 , it is not possible to measure the temperature between adjacent battery modules 2 . That is, if the temperature sensor fails, since the temperature measurement around the battery module 2 is not made, temperature management for the rack 1 cannot be made.
  • One problem to be solved by the present invention is to provide a temperature measuring device capable of sensing not only the temperature of the space between a plurality of power device modules, but also the temperature outside the space, and an energy storage device including the same.
  • Another object to be solved by the present invention is to provide a temperature measuring device that is easy to check and replace, and an energy storage device including the same.
  • the temperature measuring device may be provided in an energy storage device having a plurality of power device modules.
  • the temperature measuring device may include: an optical fiber cable including a plurality of sensing spots for sensing a temperature, the plurality of sensing spots being spaced apart from each other by a predetermined unit interval; and a plurality of cable fixing units disposed between the plurality of power device modules and fixing the optical fiber cables.
  • the optical fiber cable may include a plurality of inner sections positioned between the plurality of power device modules and fixed to the cable fixing unit; and at least one outer section connecting the plurality of inner sections in series with each other and having a length longer than the unit interval.
  • the temperature measuring apparatus may further include a controller to which the optical fiber cable is connected, and to visualize temperature information sensed by the plurality of sensing spots in a graph and output it on a display.
  • the outer section may be located adjacent to one circumferential surface of the power device module.
  • the outer section may include a curling part positioned to overlap one circumferential surface of the power device module in a horizontal direction and having a shape rolled at least once.
  • a plurality of the outer sections may be provided, and a plurality of curling portions of the plurality of outer sections may be arranged in a line in a vertical direction.
  • a radius of curvature of the curling part may be 20 times or more of a cross-sectional diameter of the optical fiber cable.
  • the number of sensing spots positioned in the inner section may be greater than the number of sensing spots positioned in the outer section.
  • the outer section is provided in plurality, and the plurality of outer sections includes: a first outer section located in front of one power device module; and a second outer section located at the rear of the other power device module adjacent to the one power device module.
  • the first outer section and the second outer section may be alternately positioned with each other.
  • a rack (Rack); a plurality of power device modules installed in multiple stages in the rack; an optical fiber cable comprising a plurality of sensing spots for sensing a temperature, wherein the plurality of sensing spots are spaced apart from each other by a predetermined unit interval; and a plurality of cable fixing units disposed on the upper surfaces of the plurality of power device modules and fixing the optical fiber cables.
  • the optical fiber cable may include a plurality of inner sections positioned between the plurality of power device modules and fixed to the cable fixing unit; and at least one outer section connecting the plurality of inner sections in series with each other and having a length longer than the unit interval.
  • the energy storage device may further include at least one hook formed in the rack and fixing the at least one outer section of the optical fiber cable.
  • the outer section may include a curling portion positioned to overlap the front or rear surface of the power device module in the horizontal direction and having a shape rolled at least once.
  • the power device module may be a battery module.
  • the outer section of the optical fiber cable since the outer section of the optical fiber cable has a length longer than a unit interval between sensing spots, the outer section may include at least one sensing spot. Therefore, there is an advantage that the ambient temperature of the power device module can be detected through the outer section of the optical fiber cable.
  • the outer section of the optical fiber cable is located outside the space between the plurality of power device modules, the temperature of the chamber (indoor) in which the energy storage device is installed can be sensed through the outer section of the optical fiber cable.
  • the outer section of the optical fiber cable has a length longer than the unit interval between sensing spots, the length of the outer section has room. Accordingly, the inspection and replacement of the power device module or the temperature measuring device can be facilitated.
  • a high temperature section corresponding to the temperature sensed in the inner section and a low temperature section corresponding to the temperature sensed in the outer section can be clearly distinguished and displayed. Accordingly, the manager can intuitively and quickly determine whether the specific portion of the graph is the temperature of the space between the plurality of power device modules or the temperature outside the space.
  • the manager can intuitively and quickly grasp which power device module temperature each part of the graph corresponds to.
  • the outer section may include a curling portion having a shape rolled at least once. Accordingly, within a limited area corresponding to one circumferential surface (eg, the front surface) of the power device module, the outer section may include at least one sensing spot.
  • the curling unit may be positioned to overlap one circumferential surface of the power device module in the horizontal direction. Accordingly, it is possible to prevent the temperature measurement regions of the plurality of curling units from interfering with or overlapping each other.
  • the plurality of curling units may be arranged in a line in a vertical direction. Accordingly, the plurality of curling units may consistently measure the temperature of the same region with respect to the plurality of power device modules.
  • the radius of curvature of the curling part may be 20 times or more of the cross-sectional diameter of the optical fiber cable. Accordingly, the reliability of temperature sensing of the curling unit may be ensured.
  • the number of sensing spots positioned in the inner section may be greater than the number of sensing spots positioned in the outer section. Accordingly, the temperature distribution on one surface (eg, the upper surface) of the power device module can be reliably sensed with high resolution through the inner section.
  • FIG. 1 is a perspective view of an energy storage device according to the prior art.
  • FIG. 2 is a diagram illustrating an energy storage device and a temperature measuring device included therein according to an embodiment of the present invention.
  • FIG. 3 is a cross-sectional view taken along line A-A' of FIG. 2 .
  • FIG. 4 is a view showing an unfolded state of an optical fiber cable according to an embodiment of the present invention.
  • FIG. 5 is an enlarged view of a second section and its periphery of an optical fiber cable according to an embodiment of the present invention.
  • FIG. 6 is a perspective view illustrating an example of a cable fixing unit.
  • FIG. 7 is a perspective view showing another example of the cable fixing unit.
  • FIG. 9 is a cross-sectional view of an energy storage device according to another embodiment of the present invention.
  • an element when an element is described as being “fastened” or “connected” to another element, it means that two elements are directly fastened or connected, or there is a third element between the two elements and two elements are connected by the third element. It may mean that elements are connected or fastened to each other. On the other hand, when it is described that one element is “directly fastened” or “directly connected” to another element, it may be understood that a third element does not exist between the two elements.
  • FIG. 2 is a diagram showing an energy storage device and a temperature measuring device included therein according to an embodiment of the present invention
  • FIG. 3 is a cross-sectional view taken along line A-A' of FIG. 2
  • FIG. 4 is an embodiment of the present invention It is a view showing a state in which the optical fiber cable is unfolded.
  • the energy storage device 10 may include a rack 11 , a plurality of power device modules 20 , and a plurality of temperature measuring devices 25 .
  • the rack 11 may be configured such that a plurality of power device modules 20 are installed in multiple stages.
  • the power device module 20 is a battery module
  • the same reference numerals are used for convenience.
  • the rack 11 may include an upper plate 12 , a lower plate 13 , and a plurality of frames 14 that connect the upper plate 12 and the lower plate 13 and extend vertically.
  • a plurality of battery modules 20 may be installed in multiple stages with respect to the vertical direction in the rack (11).
  • the rack 11 may be provided with a module guide for guiding the installation of the battery module (20).
  • the module guide may be a support plate supporting the battery module 20 .
  • the module guide may be a rail or a rail counterpart for guiding the insertion of the battery module 20 .
  • the temperature measuring device 25 may detect the temperature of the battery module 20 and its surroundings.
  • the temperature measuring device 25 measures the surface temperature of the battery module 20 or the space temperature between the battery modules 20 .
  • the temperature measuring device 25 may include a cable fixing unit 30 and an optical fiber cable 40 .
  • the cable fixing unit 30 may be disposed to be in surface contact with one surface (eg, an upper surface) of the battery module 20 or may be installed to have a predetermined gap with the one surface.
  • the cable fixing unit 30 may fix the optical fiber cable 40 .
  • the cable fixing unit 30 may fix the optical fiber cable 40 in a bent state along a preset path.
  • the cable fixing unit 30 may have a panel or frame shape. The configuration of the cable fixing unit 30 will be described in detail later.
  • the plurality of cable fixing units 30 may be positioned between the plurality of battery modules 20 .
  • each cable fixing unit 30 may be positioned between a pair of battery modules 20 adjacent to each other.
  • the cable fixing unit 30 located at the uppermost end may be located above the battery module 20 located at the uppermost end.
  • Each cable fixing unit 30 may be inserted and installed between a pair of battery modules 20 adjacent to each other by operating like a drawer.
  • the rack 11 or the battery module 20 may be provided with a unit guide for guiding the installation of the cable fixing unit (30).
  • the unit guide may be a support plate for supporting the cable fixing unit 30 .
  • the unit guide may be a rail or a rail counterpart for guiding the insertion of the cable fixing unit 30 .
  • the fiber optic cable 40 may be a single cable. However, the present invention is not limited thereto.
  • the method of measuring the temperature using the optical fiber cable 40 is applied to temperature measurement of conventional power underground lines and oil refinery chemical pipelines, and is also called Distributed Temperature Sensing (DTS).
  • DTS Distributed Temperature Sensing
  • Dispersion temperature measurement utilizes the proportional characteristic of temperature and wavelength, which is one of the unique characteristics of optical fibers.
  • the quartz constituting the optical fiber There are three types of scattered waves reflected by the quartz constituting the optical fiber. These are a Rayleigh-scattering wave, a Raman-scattering wave, and a Brillouin-scattering wave.
  • the Raman wave represents a wavelength that is directly proportional to the temperature. This can be used to measure the temperature (converting the measured wavelength to temperature according to the size).
  • the optical fiber cable 40 is formed linearly. Therefore, it is possible to measure the temperature of the optical fiber cable 40 by measuring the scattering frequency of the optical fiber cable 40 at regular unit intervals (L). That is, the optical fiber cable 40 includes a plurality of sensing spots 45 for sensing temperature, and the plurality of sensing spots 45 are spaced apart from each other by a predetermined unit interval L along the optical fiber cable 40 . can be spaced apart.
  • the unit interval L may be 50 cm, and the resolution of each sensing spot 45 may be 0.01°C. That is, the temperature of the optical fiber cable 40 can be measured at a resolution of 0.01° C. per 50 cm.
  • the unit spacing and resolution of the optical fiber cable 40 may be changed as needed.
  • the optical fiber cable 40 includes a plurality of inner sections 41 located between the plurality of battery modules 20 and at least one outer section 42 connecting the plurality of inner sections 41 in series with each other.
  • Each inner section 41 may be fixed to the cable fixing unit 30 and positioned between a pair of adjacent battery modules 20 . Accordingly, the temperature of one surface (eg, the upper surface) of each battery module 20 may be sensed through each inner section 41 .
  • one surface (eg, an upper surface) of the battery module 20 may be divided into a plurality of regions.
  • Each region may be a region in which battery cells inside the battery module 20 are physically separated, such as a partition or partition wall, or a virtual region in which the upper surface of the battery module 20 is divided into a predetermined area.
  • the inner section 41 of the optical fiber cable 40 may have a plurality of sensing spots 45 .
  • the arrangement shape of the optical fiber cable 40 may be determined so that the plurality of sensing spots 45 may be appropriately arranged in each area.
  • each cable fixing unit 30 may fix each inner section 41 in a bent state along a preset path.
  • the plurality of inner sections 41 may have shapes and lengths corresponding to each other.
  • Each inner section 41 may include a plurality of sensing spots 45 . That is, the length L1 of each inner section 41 may be longer than twice the unit interval L between a pair of adjacent sensing spots 45 .
  • the temperature distribution on the one surface of the battery module 20 can be reliably sensed through each inner section 41 .
  • Each outer section 42 may be located outside the space between the plurality of batteries 20 .
  • Each outer section 42 may be located adjacent to one circumferential surface of the battery module 20 .
  • the at least one outer section 42 may be located adjacent to the front surface 21 of the battery module 20 .
  • each outer section 42 may have shapes and lengths corresponding to each other.
  • Each outer section 42 may include at least one sensing spot 45 . That is, the length L2 of each outer section 42 may be longer than the unit interval L between a pair of adjacent sensing spots 45 .
  • each outer section 42 the peripheral surface of each battery module 20 or the ambient temperature of each battery module 20 may be sensed through each outer section 42 .
  • the length of the outer section 42 has a margin, the inspection and replacement of the battery module 20 or the temperature measuring device 25 can be facilitated.
  • each inner section 41 may be longer than the length L2 of each outer section 42 . That is, the number of sensing spots 45 positioned in each inner section 41 may be greater than the number of sensing spots 45 positioned in each outer section 42 .
  • each inner section 41 may include four sensing spots 45
  • each outer section 42 may include one sensing spot 45 .
  • the outer section 42 of the optical fiber cable 40 is at least It may include a curling part 43 having a shape rolled once.
  • the curling part 43 may form a ring shape.
  • the curling unit 43 may include at least one sensing spot 45 .
  • the radius of curvature of the curling part 43 may be 20 times or more of the cross-sectional diameter D of the optical fiber cable 40 . This is in consideration of the material properties of the optical fiber cable 40 . In the optical fiber cable 40 , the reliability of temperature sensing can be ensured when the radius of curvature of each point over the entire section is maintained at least 20 times the cross-sectional diameter of the optical fiber cable 40 .
  • the curling part 43 may be positioned to overlap one circumferential surface of the battery module 20 in a horizontal direction.
  • the height H2 of each curling part 43 may be lower than the height H1 of each battery module 20 .
  • the plurality of curling units 43 may be arranged in a line.
  • the plurality of curling parts 43 may be arranged in a line in a vertical direction. Accordingly, temperatures in the same region may be consistently measured with respect to the plurality of battery modules 20 through the plurality of curling units 43 .
  • the energy storage device 10 may further include a controller 60 having at least one processor.
  • the controller 60 may receive a plurality of temperature information sensed by the plurality of sensing spots 45 included in the optical fiber cable 40 .
  • the controller 60 may be configured as a DTS server.
  • the controller 60 may display or notify a warning alarm on the output interface when there is temperature information out of a preset limit temperature range among a plurality of temperature information in the plurality of sensing spots 45 .
  • the output interface may include a display 61 .
  • the controller 60 includes a communication module that communicates with a terminal and the like, and of course it is also possible to display or notify the warning alarm to the operator through the terminal.
  • FIG. 5 is an enlarged view of a second section and its periphery of an optical fiber cable according to an embodiment of the present invention.
  • At least one hook 15 for fixing at least one outer section 42 of the optical fiber cable 40 may be formed in the rack 11 .
  • each hook 15 may fix each curling part 43 .
  • a plurality of hooks 15 may be formed in the frame 14 of the rack 11 .
  • the plurality of hooks 15 may be arranged in a line by being spaced apart from each other by a predetermined distance in the vertical direction.
  • each curling part 43 can be supported without being sagged downward. Accordingly, the peripheral temperature of each battery module 20 can be reliably sensed through each outer section 42 .
  • FIG. 6 is a perspective view illustrating an example of a cable fixing unit.
  • the cable fixing unit 30 may include at least one panel 31 , 32 .
  • the cable fixing unit 30 may include an upper panel 31 and a lower panel 32 attached to a lower surface of the upper panel 31 .
  • the optical fiber cable 40 more specifically, the inner section 41 may be inserted and installed between the upper panel 31 and the lower panel 32 . That is, at least one of the upper panel 31 and the lower panel 32 may have a receiving groove in which the optical fiber cable 40 is accommodated.
  • the upper panel 31 and the lower panel 32 may be thin plates in the form of boards or films. Accordingly, the load applied to each battery module 20 or the rack 11 is reduced, and the space required to install the cable fixing unit 30 can be reduced.
  • the upper panel 31 and the lower panel 32 may have a material having good heat resistance, such as a Teflon sheet.
  • the present invention is not limited thereto, and the cable fixing unit 30 is configured as a single panel, and the optical fiber cable 40 may be attached to or fixed to one surface of the panel.
  • the inner section 41 of the optical fiber cable 40 may be bent at least once.
  • the inner section 41 may have a zigzag shape including a plurality of straight portions 41a and a plurality of curved portions 41b.
  • the radius of curvature of the curved portion 41b may be 20 times or more of the cross-sectional diameter D of the optical fiber cable 40 (refer to FIG. 4 ).
  • FIG. 7 is a perspective view showing another example of the cable fixing unit.
  • the cable fixing unit 30 may include at least one frame 33 , 34 .
  • the area covering one surface (eg, the upper surface) of the battery module 20 is reduced and there is an advantage of excellent ventilation. .
  • the cable fixing unit 30 includes a support frame 33 for supporting the optical fiber cable 40, and a fixing frame 34 connected to the support frame 33 and to which the optical fiber cable 40 is fixed. can do.
  • the support frame 33 may have a rectangular frame shape.
  • the support frame 33 may include a pair of long frames 33a that are parallel to each other, and a pair of short frames 33b that connect both ends of the pair of long frames to each other and are parallel to each other. .
  • the long frame 33a may be formed to be longer than the depth of the battery module 20 , that is, the long side.
  • the short frame 33b may be formed shorter than the width of the battery module 20 , that is, the short side.
  • the support frame 33 may be formed of a synthetic resin or a metal material. That is, the support frame 33 may have a material having strong heat resistance and high thermal conductivity. Accordingly, the support frame 33 may perform heat dissipation of the battery module 20 while in contact with the upper surface of the battery module 20 .
  • a stopper 36 that can limit the insertion degree may be provided.
  • the stopper 36 may protrude downward from the short frame 33b or may protrude downward from the end of the long frame 33a.
  • the fixed frame 34 may extend in parallel with the long frame 33a, and may connect the central portions of the pair of short frames 33b to each other.
  • the fixing frame 34 may have a bar shape.
  • the fixing frame 34 may be disposed to be stepped upwards of the support frame 33 .
  • a plurality of fixing grooves 35 to which the optical fiber cable 40, more specifically, the inner section 41 are fixed, may be formed on the bottom surface of the fixing frame 34 .
  • the plurality of fixing grooves 35 may be spaced apart from each other along the extending direction of the fixing frame 34 .
  • Each fixing groove 35 may extend long in the width direction of the fixing frame 34 .
  • Each of the fixing grooves 35 has a side cross-section formed as a part of a circle.
  • the inlet of each fixing groove 35 may be formed smaller than the diameter of the optical fiber cable 40 . Therefore, after the optical fiber cable 40 is fixed to the fixing groove 35 in a press fit manner, it may not be separated from the fixing groove 35 .
  • the optical fiber cable 40 more specifically, the inner section 41 is inserted and installed between the support frame 33 and the fixed frame 34 .
  • the optical fiber cable 40 may be supported by the long frame 33a of the support frame 33 , and may be fixedly inserted into the fixing groove 35 of the fixing frame 34 .
  • the optical fiber cable 40 may be disposed between the support frame 33 and the fixed frame 34 in a rolled or bent form. That is, the optical fiber cable 40 may be disposed while a single cable is continuously wound. The fiber optic cables 40 may be overlapped when bent.
  • the optical fiber cable 40 may advance in the extension direction of the fixing frame 34 while being wound in any one of a clockwise direction or a counterclockwise direction.
  • the optical fiber cable 40 may be wound in a spring form a plurality of times and then disposed in a form that is collapsed to one side.
  • the optical fiber cable 40 may be wound in an elliptical shape.
  • the optical fiber cable 40 may be disposed so that portions overlapping each other are formed while being wound.
  • the optical fiber cable 40 may be mounted on a pair of long frames 33a. That is, the width of the shape of the optical fiber cable 40 may be formed to be longer than the length of the short frame 33b.
  • the order in which the optical fiber cable 40 is fitted into the plurality of fixing grooves 35 may follow a predetermined rule.
  • the plurality of fixing grooves 35 are sequentially arranged along the extending direction of the fixing frame 34 , a first fixing groove 35-1, a second fixing groove 35-2, ..., n-th. It may be called a fixing groove (35-n).
  • the optical fiber cable 40 includes a third fixing groove 35-3, a first fixing groove 35-1, a fifth fixing groove 35-5, a second fixing groove 35-2, and a seventh fixing groove.
  • the fixing groove (35-7), the fourth fixing groove (35-6), the ninth fixing groove (35-9), the sixth fixing groove (35-6), ... may be fitted in the same order.
  • the rule of increasing 5 fixing grooves and decreasing 3 fixing grooves may be followed. These rules may vary as needed.
  • the configuration of the cable fixing unit 30 is not limited thereto, and the cable fixing unit 30 includes an upper frame and a lower frame, and the optical fiber cable 40 is inserted between the upper frame and the lower frame to be fixed. there is.
  • the cable fixing unit 30 is configured as a single frame in which the fixing groove 35 is formed.
  • the controller 60 may visualize a plurality of temperature information detected by the plurality of sensing spots 45 included in the optical fiber cable 40 as a graph and output it to the display 61 .
  • the controller 60 may output the graph to an external terminal or the like.
  • the horizontal axis of the graph may correspond to the order of the sensing spots 45 arranged along the length direction of the optical fiber cable 40
  • the vertical axis of the graph may correspond to the temperature sensed by the sensing spot 45 .
  • the temperature of the space between the plurality of battery modules 20 is generally higher than the temperature outside the space. Accordingly, the temperature sensed in the inner section 41 of the optical fiber cable 40 may be higher than the temperature sensed in the outer section 42 .
  • relatively high temperature sections P1, P3, and P5 and relatively low temperature sections P2 and P4 may be alternately repeated. That is, the high temperature sections P1 , P3 , and P5 may correspond to the temperature sensed in the inner section 41 of the optical fiber cable 40 , and the low temperature sections P2 and P4 are the optical fiber cables 40 . ) may correspond to the temperature sensed in the outer section 42 .
  • the manager can intuitively grasp the high temperature section (P1), (P3) (P5) and the low temperature section (P2) (P4) by looking at the graph. That is, the manager can intuitively determine whether the specific portion of the graph is the temperature of the space between the plurality of battery modules 20 or the temperature outside the space.
  • the manager can intuitively grasp which battery module 20 corresponds to the temperature of each part of the graph.
  • the manager includes a first high-temperature section P1 corresponding to the temperature of one surface of any one battery module 20 and a second high-temperature section P3 corresponding to the temperature of one surface of the other battery module 20,
  • the third high-temperature section P5 corresponding to the temperature of one surface of another battery module 20 can be quickly identified.
  • the outer section 42 of the optical fiber cable 40 does not include the sensing spot 45, only the plurality of high temperature sections P1, P3, and P5 will be continuously displayed on the graph. Accordingly, it is difficult for the manager to intuitively determine which battery module 20 corresponds to the temperature of each part of the graph, and there is an inconvenience of having to classify it through a separate process.
  • the present invention can solve such inconvenience.
  • FIG. 9 is a cross-sectional view of an energy storage device according to another embodiment of the present invention.
  • the plurality of outer sections 42 include a first outer section 42a located in front of one battery module 20 and another battery module 20 adjacent to the one battery module 20 . It may include a second outer section 42b located at the rear.
  • the first outer section 42a and the second outer section 42b may be alternately positioned along the optical fiber cable 40 .
  • the first outer section 42a may be positioned adjacent to the front surface 21 of the battery module 20
  • the second outer section 42b may be positioned adjacent to the rear surface 22 of the battery module 20 .
  • Each of the outer sections 42a and 42b may include a curling part 43 including at least one sensing spot 45 , respectively.
  • the curling part 43 of the first outer section 42a may be positioned to overlap the front surface 21 of the battery module 20 in the horizontal direction.
  • the curling part 43 of the second outer section 42b may be positioned to overlap the rear surface 22 of the battery module 20 in a horizontal direction.
  • the front surface 21 of the battery module 20 or the ambient temperature of the front surface 21 can be sensed through the first outer section 42a.
  • the rear surface 22 of the battery module 20 or the ambient temperature of the rear surface 22 may be sensed through the second outer section 42b.
  • the optical fiber cable 40 according to the present embodiment has the advantage of being able to sense the temperature distribution around the battery module 20 more widely.
  • the plurality of curling portions 43 included in the plurality of first outer sections 42a may be arranged in a line in a vertical direction. Accordingly, the plurality of curling units 43 may consistently measure the temperature of the same region with respect to the front surface 21 of the plurality of battery modules 20 .
  • the plurality of curling portions 43 included in the plurality of second outer sections 42b may be arranged in a line in a vertical direction. Accordingly, the temperature of the same region with respect to the rear surface 22 of the plurality of battery modules 20 can be consistently measured through the plurality of curling parts 43 .

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Secondary Cells (AREA)

Abstract

Un dispositif de mesure de température selon un mode de réalisation de la présente invention peut être fourni dans un dispositif de stockage d'énergie présentant une pluralité de modules de dispositif d'alimentation. Le dispositif de mesure de température peut comprendre une pluralité de points de détection pour une détection de température, la pluralité de points de détection pouvant comporter : des câbles à fibre optique espacés d'une distance unitaire régulière les uns des autres ; et une pluralité d'unités de fixation de câble disposées entre la pluralité de modules de dispositif de puissance pour fixer les câbles à fibre optique. Les câbles à fibre optique peuvent comprendre : une pluralité de sections internes qui sont placées entre la pluralité de modules de dispositif d'alimentation et fixées aux unités de fixation de câble ; et au moins une section externe qui relie la pluralité de sections internes en série les unes aux autres et présente une longueur supérieure à la distance unitaire.
PCT/KR2021/011048 2020-09-16 2021-08-19 Dispositif de mesure de température et dispositif de stockage d'énergie comportant ce dernier WO2022059938A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US18/026,719 US20240035904A1 (en) 2020-09-16 2021-08-19 Temperature measurement device and energy storage device including same
CN202180063257.XA CN116235349A (zh) 2020-09-16 2021-08-19 温度测量装置以及包括该温度测量装置的储能装置

Applications Claiming Priority (2)

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KR10-2020-0119392 2020-09-16
KR1020200119392A KR102486708B1 (ko) 2020-09-16 2020-09-16 온도 측정장치 및 이를 포함하는 에너지 저장 장치

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WO2022059938A1 true WO2022059938A1 (fr) 2022-03-24

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US (1) US20240035904A1 (fr)
KR (1) KR102486708B1 (fr)
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Citations (5)

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KR100812742B1 (ko) * 2007-04-03 2008-03-12 주식회사 에이티티알앤디 2차 전지
JP2009053159A (ja) * 2007-08-29 2009-03-12 Toyota Motor Corp 温度検出装置
KR101309952B1 (ko) * 2010-12-28 2013-09-17 주식회사 포스코 연료 전지 스택 및 그 내부 온도 측정 방법
JP6398139B2 (ja) * 2014-04-01 2018-10-03 パロ アルト リサーチ センター インコーポレイテッド インターカレーション段階の変化を検出することによって、電気化学的エネルギーデバイスをモニタリング／管理するための方法
KR102106153B1 (ko) * 2019-10-17 2020-05-04 주식회사 현대쏠라텍 에너지저장장치의 화재 감시 장치

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US7155075B2 (en) * 2004-03-29 2006-12-26 General Electric Company Optical battery temperature monitoring system and method

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100812742B1 (ko) * 2007-04-03 2008-03-12 주식회사 에이티티알앤디 2차 전지
JP2009053159A (ja) * 2007-08-29 2009-03-12 Toyota Motor Corp 温度検出装置
KR101309952B1 (ko) * 2010-12-28 2013-09-17 주식회사 포스코 연료 전지 스택 및 그 내부 온도 측정 방법
JP6398139B2 (ja) * 2014-04-01 2018-10-03 パロ アルト リサーチ センター インコーポレイテッド インターカレーション段階の変化を検出することによって、電気化学的エネルギーデバイスをモニタリング／管理するための方法
KR102106153B1 (ko) * 2019-10-17 2020-05-04 주식회사 현대쏠라텍 에너지저장장치의 화재 감시 장치

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KR102486708B1 (ko) 2023-01-10
KR20220036787A (ko) 2022-03-23
US20240035904A1 (en) 2024-02-01
CN116235349A (zh) 2023-06-06

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